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  1. K

    author of the transformer article

    http://www.electronics-lab.com/articles/transformers/index.html I found your article very interesting and very in depth. I am not interested, at this point, in mass production. My question is about the electrical characteristic. My calculations involve inductive reactance rather than number of...
  2. K

    transistors

    Does anybody notice how often the biasing is less than optimum when trying to incorporate a few transistors in a circuit. I seem to be satisfied when the circuit works on paper, even though I am applying a signal directly to a PN junction. Any thoughts as to why many circuits can get away with this.
  3. K

    transformer core

    Thank you for the website. I noticed that the power flux density requires a relatively small area. The main problem is the laminated core. It looks like I will have to strip apart a transformer. I had something different in mind when it comes to the electrical characterstic too. My idea for the...
  4. K

    transformer core

    I am building a stepup autotransformer. I have been told that the solution to the core is to strip old transformers of their cores, glue them together, and use a cardboard form to wrap the magnet wire. This is from a culmination of advice. Does anybody have something to add to this? Also, the...
  5. K

    A (simple) question about PSU

    I think I follow. But you have to admit that although the inductive reactance is greater than the capacitive reactance for good ripple reduction, the idea of equal reactance is tempting. Maximum power is transfered to the circuit when the peak voltage is in phase with peak current.
  6. K

    A (simple) question about PSU

    I have a question. If you have a simple LC filter with the output taken across the capacitor, does the load current and voltage depend on the fact that maximum power occurs when the source voltage is in phase with the current. This would mean the inductive reactance should equal the capacitive...
  7. K

    Voltage Multiplier

    The load is not across the capacitor. The final capacitor charges to the peak of the cycle. The other capacitors keep charged to a voltage and pass the AC. When the cycle continues the diode is reversed and the final capacitor delivers to the load.
  8. K

    EEG Amplifier

    Watch for the input power. If the input power does not matter, then use any amplifier. If it does matter, use an opamp because the low current will help to establish voltage.
  9. K

    Voltage Multiplier

    Does the final capacitor in a voltage multiplier determine the current that is supplied to the load? I think the other capacitors can be smaller, which results in a reduced output voltage.
  10. K

    What is a reasonable frequency?

    What is the maximum frequency that is reasonable to work with?Something that can be averaged to a DC level and measured with a meter.
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